JPH02229227A - Rotary ring for spinning and device for controlling same ring - Google Patents

Abstract

PURPOSE:To provide the subject small rotary ring having a built-in ring motor therein by disposing a rotor at the approximate axial direction center of the outer peripheral surface of a ring rotator and also disposing an armature at the approximate axial direction center of the inner peripheral surface of a holder. CONSTITUTION:A permanent magnet rotor 10 is disposed at the approximate axial direction center of the outer peripheral surface of a ring rotator 2 and an armature 11 is also disposed at the approximate axial direction center of the inner peripheral surface of a holder 8 and at a position facing to the outer peripheral surface of the rotor 10, thereby constituting an inner rotor type ring motor 9 with the rotor and the armature.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rotating ring for spinning incorporating a ring motor, and a control device thereof.

[Prior Art and its Problems] Conventionally, various rotating rings for spinning have been announced and attempted for spinning and twisting devices such as ring spinning machines, ring twisting machines, and ring drawing and twisting machines.

Most of these known rotating rings are actively rotating rings that use an external power transmission mechanism such as compressed air or a flixin pulley, or passively rotating rings that use one friction force of the traveler as torque. Furthermore, a rotating ring has been proposed in which a ring motor is built into the rotating ring and the ring rotating body is electrically rotated (Japanese Patent Laid-Open No. 61-152
No. 835). However, since the motor has an outer row structure, it is bulkier due to the volume of the windings and iron core that make up the armature and rotor, compared to the rotating rings of the other drive methods mentioned above. Since the outer diameter of the spinning machine increases and the pitch between adjacent spindles of the machine frame needs to be considerably enlarged, there is a disadvantage that the number of operating spindles of the spinning machine in the same space is significantly reduced.

In addition, the spindle rotation speed of a spinning machine equipped with a rotary ring of a known method has already been achieved at 20,000 to 22,000 revolutions per minute;
At present, tests have been carried out at 40,000 to 60,000 revolutions per minute, but in order to obtain the same production efficiency with the reduced number of spindles using the motorized rotating ring described above, the spindle must rotate at around 40,000 to 60,000 revolutions per minute. However, it is not practical due to problems in terms of mechanical structure, vibration, power cost, yarn quality, operational management, etc.

On the other hand, as a means to cope with wide variations in spinning tension during the entire spinning process, conventional spinning machines have been used to adjust the yarn speed from the start of winding an empty bobbin to 2-3 minutes, and from 8-9 minutes to a full tube. In the part ball section where breakage occurs frequently, mechanical adjustment measures are used, such as reducing the spindle rotation speed by 10 to 20% from the maximum rotation speed of the medium ball using a transmission, and adopting a cushion-con start method when starting. Therefore, a decrease in productivity in this section where thread breakage frequently occurred was unavoidable. In addition, in a thrust bearing or air bearing passive rotating ring in which the friction pressure of the traveler is used as torque, the rotation torque is determined by the stretch length, the ring rail's The weight of a ring rotating body is unique to that ring, regardless of changes as the spinning tension increases or decreases due to the split ball position, the lifting and lowering movement of the ring rail including the pilde ink motion, the speed change between chasers of the traveler, and other factors. ．． Therefore, when the upward lifting component of the spinning tension exceeds the weight of the ring rotating body, the rotating body rotates at high speed, and if there is no brake device, the speed will gradually increase, and the bearing will become an air bearing in an extremely short time. It draws a "J-curve" and rotates at the same speed as the Traveler.

Once the ring rotating body reaches the same speed as the traveler,
Although the rotational speed of the traveler changes due to the change in the winding speed between the teeth, the ring rotating body reaches the same speed as the maximum rotational speed of the traveler due to inertia and does not change speed.
The difference π (D-d) between when winding the bobbin diameter d at the top of the chase and when winding the outer diameter D of the tube yarn at the bottom of the chase reaches around twice, and the ring rotation may exceed the traveler rotation. The spinning tension fluctuates wildly between positive and negative. As a result, the spun yarn passing through the traveler is subjected to repeated and severe crushing, and especially in the case of synthetic yarns, yarn quality deteriorates, such as crushing, breaking of component fibers, melting yarn due to frictional heat, yellowing weak yarn, etc. , and causes fuzz and thread breakage.

For this reason, it is necessary to keep the rotational speed of the ring rotating body lower than the rotational speed of the traveler, and for this purpose, frictional resistance is necessarily required between the two.

However, if the spinning tension generated by this frictional resistance exceeds the strength of the yarn, the yarn will break, so with conventional rotating rings that cannot control the rotational speed (number of rotations) of the ring rotating body, there is a limit to the increase in the rotational speed of the spindle. is 20-30%
This hindered the speeding up of spinning machines.

In addition, we have developed a rotating ring with a friction brake device (Japanese Patent Laid-Open No. 57-34927) and a rotating ring with a magnetic brake device using eddy current (Japanese Patent Application No. 57-34927) as a scraping rotating ring that prevents the ring rotating body and the traveler from becoming at the same speed. 62-25545
No. 6), each of which is effective, but the former has the problem of brake shoe wear, and the latter has a different magnetic force when the spun yarn type or count changes significantly. This caused the inconvenience of requiring replacement.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, an object of the present invention is to provide a rotating spinning ring with a built-in inner rotor type ring motor that can be constructed in a small size.

Another object of the present invention is to provide a control device that can perform spinning at high speed and without yarn breakage by using a rotating spinning ring with a built-in ring motor.

[Means to solve the problem]

In order to solve the above-mentioned problem, the invention of claim 1 provides a rotating ring for spinning comprising a holder and a ring rotating body rotatably supported by the holder via a bearing mechanism, the spinning ring comprising a permanent magnet. A rotor consisting of a rotor is provided approximately in the axial center of the outer circumferential surface of the ring rotating body, and an armature, which together with the rotor constitutes an inner rotor type ring motor, is provided on the inner circumferential surface of the holder. It is characterized in that it is provided at substantially the center in the axial direction and at opposing positions on the outer circumferential side of the rotor. Claim 2
The invention provides a control device for a rotating ring for spinning having a built-in ring motor, which comprises a tension detection means for detecting tension of a spun yarn, a setting means for setting an optimum tension of the spun yarn, and the tension detection means. comparison means for comparing the tension detected by the tension with the optimum tension set by the setting means; and rotation of the ring motor so that the tension of the spun yarn approaches the optimum tension according to the output of the comparison means. and control means for controlling the number.

The invention according to claim 3 is a spinning ring control device having a built-in ring motor, comprising: a tension detection means for detecting the tension of the spun yarn; a setting means for setting the optimum tension of the spun yarn; determining means for determining whether or not the tension detected by the tension detecting means is within the allowable range for the optimum tension set by the setting means; and the ring motor for determining whether the tension of the spun yarn falls within the allowable range. and control means for controlling the rotational speed of the motor.

The invention according to claim 4 is a spinning ring control device having a built-in ring motor, comprising: a tension detection means for detecting the tension of the spun yarn; a setting means for setting the optimum tension of the spun yarn; a determining means for determining whether or not the tension detected by the tension detecting means is within an allowable range for the optimum tension set by the setting means; A program means for setting the rotation speed to be a predetermined rotation speed according to the ball ratio, and a program control means for controlling the ring motor so that the rotation speed of the spinning ring becomes the rotation speed set in the program means. and a correction control means for correcting the rotational speed of the ring motor so that the tension falls within the permissible range when the judgment means determines that the tension of the spun yarn exceeds the permissible range. It is composed of the following characteristics: The invention according to claim 5 is a control device for a spinning ring having a built-in ring motor, which controls the rotation speed of a spindle and the rotation speed of the spinning ring corresponding to the rotation speed of the spindle to a stretch length or a splitting ratio. and a program control means for controlling the ring motor so that the number of rotations of the spinning ring becomes the number of rotations set in the program means. configured.

[Function] The rotor and armature constitute a ring motor with an inner rotor, which is rotated by an external electric signal or electric power, and whose rotational speed (rotational speed) is controlled. This controls the rotational speed of the spinning spinning ring.

The tension detection means detects the tension of the spun yarn, and the comparison means compares the tension with the optimum tension of the spun yarn set by the setting means,
The control means controls the rotation speed of the ring motor in accordance with the output of the comparison means so that the tension of the spun yarn approaches the optimum tension.

The determining means determines whether the tension detected by the tension detecting means is within an allowable range for the optimum tension set by the setting means. In this case, the control means
The rotational speed of the ring motor is controlled so that the tension of the spun yarn is within the permissible range.

The programming means sets the number of revolutions of the spindle and the rotating spinning ring to a predetermined number of revolutions according to the stretch length or the division ratio.

Program 11 f71 means controls the rotation speed of the ring motor or the rotation speed of the ring motor and spindle based on the contents of the program means.

The correction control means corrects the rotation speed of the ring motor so that the tension falls within the permissible range when the determination means determines that the tension of the spun yarn exceeds the permissible range.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of a cross-section of a rotating ring l according to the present invention.

The rotating ring 1 includes a ring rotating body 2 in which a flange rotor 3 having a ring flange 4 and a lower rotor 5 are integrated, a holder 8 that rotatably supports the ring rotating body 2 via a bearing 6.7, and , a rotor 10 consisting of a permanent magnet provided approximately in the axial center of the outer circumferential surface of the ring rotating body 2 and a rotor 10 formed of a permanent magnet located approximately in the axial center of the inner circumferential surface of the holder 8 and facing each other on the outer circumferential side of the rotor 10. It consists of a ring motor 9 consisting of an armature 1l installed at a certain position. Although the bearings 6.7 are ball bearings in the illustrated example, they may be other rolling bearings, or may be made of other materials such as Super Embla or ceramic, which are wear resistant, heat resistant, and have a low coefficient of friction.

The ring motor 9 is composed of, for example, a DC motor or a synchronous motor, and the current supplied to it is
It rotates at a speed that depends on the voltage or frequency. An upper dustproof cover 21 is attached to the outer circumference of the flange rotor 3, and a lower dustproof cover 22 is attached to the lower inner circumference of the holder 8. A presser nut 24 for holding down the hair ring 7 is screwed into a screw 23 provided on the outer peripheral surface of the lower end of the lower rotor 5.
A detection plate 25 whose half circumference in the circumferential direction is black and the remaining half circumference is white is pasted on the upper surface of the disk-shaped flange 24a provided at 4. On the other hand, the above-mentioned detection plate 25 is attached to the bearing casing 26 attached to the lower part of the holder 8.
A reflective photoelectric sensor 27 is installed to detect the rotational speed of the ring rotating body 2 by detecting black and white.As a means for detecting the rotational speed of the ring rotating body 2, a notch, an uneven surface, etc. It is possible to use various known detection means in which a rotating body provided with a magnetic field generating section, a photointerrupter, a microswitch, a magnetic sensor, etc. are linked together.

In the figure, 28 and 28a are spacers made of non-magnetic material;
9 is a coil case made of an insulator, 30 to 32 are retaining rings, 33 is a space adjustment ring, 34 is a collar for mounting the holder 8, 35 is a bolt for fixing the holder 8 to the ring rail 36, 41 is a traveler, and 42 is a bobbin, 4
3 is a tube yarn, and 44 is a spun yarn (balloon portion).

FIG. 2 is a diagram showing the changing state of the balloon due to the difference in stress between the chases and the detection mechanism of the spinning tension during use of the rotating ring 1. A label 7 trail 5l is installed horizontally at a constant height position with respect to the rotating ring l, and the spun yarn 4 is attached to this lappet rail 5l.
A tension sensor 52 is attached to detect the tension in the balloon No. 4. The tension sensor 52 is a semiconductor-type or strain-gauge-type load transducer that detects minute loads, and converts the horizontal component of the balloon tension of the spun yarn 44 through the ring-shaped Snell wire 53 attached to the tip into an electric current. Convert to signal.
Based on this signal, the upper tension of the spun yarn 44 between the contact point PS with the Snell wire 53 and the nip point PN, which is the contact point with the front roller 54, is calculated by a CPU (central processing unit), which will be described later. It is calculated as follows. Note that a rabbet is usually attached to the rabbet rail 51 for each spindle, but in this embodiment, a rabbet is attached to the spinning machine 1.
A total of about ten tension sensors 52 described above are attached to each stand (400 to 1000 spindles), and the average value of the tension detected by these tension sensors 52 is used.

Furthermore, as shown by the chain line in FIG. 2, a tension sensor 52a may be installed between the contact point PS and the nip point PN to directly detect the upper tension of the spun yarn 44. In FIG. 2, B indicates the chase, and A1 and A2 indicate the balloon stretch at the lowest or highest position of the chase B, respectively.

Although not shown in FIG. 2, as means for detecting the vertical position of the rabbet rail 5l and the ring rail 36, there is also a rack that straddles the rabbet rail 51 and the ring rail 36, and a rack that is attached to the ring rail 36 and engages with the rack. A lappet rail position detector 61 and a ring rail position detector 62 are provided, each of which includes a pinion gear and an encoder that outputs a pulse according to the rotational angular position of the pinion gear. Ring rail position detector 62
The ring rail 36 for the bobbin 42 detected by
The minute ball position is detected from the absolute position of , and the vertical distance between both rails, that is, the stretch length AI, is determined from the relative positions of both rails detected by both position detectors 61 and 62.
A2 is detected, and as a result, as described later, the pipe yarn 43 is set with the full bobbin position at 1.0 and the empty bobbin winding start position at 0.
Adjustment control of spindle rotation and ring rotation is performed according to each ball position.

FIG. 3 is a block diagram of a control device 70 according to the present invention. The CPU 7 1 is composed of a microcomputer, a suitable interface circuit, etc., and performs various calculations based on input signals, processes and transfers various data, and sends various control signals and images to each part. Output signals, etc.

RAM72 temporarily stores data, programs, etc. ROM7 3 or external storage such as floppy disk or hard disk! 77 stores spinning programs for all spinning steps set for each product type and number of the multi-class II spun yarn 44. The spinning program is based on the appropriate spinning force range of each spun yarn 44 and the pipe yarn 43 formed on the bobbin 42.
This is data on standard rotational speeds of the spindle SP and the rotating ring 1, which are predetermined according to the ball proportion. ROM
73 or external storage 77 stores programs for executing processes to be performed by the CPU 71, as well as other programs and data.

The keyboard 74 is used to input various data and commands to the CPU 71 in addition to setting the optimum tension TS of the spun yarn 44 .

The display section 75 is for displaying the calculation results of the CPU 71 and the control status of each section using a cathode ray tube or the like. The printer 76 prints out various data and messages. The large number of spindles SP is rotated by increasing and decelerating at a constant ratio with respect to the main shaft by driving the main shaft 83 by the spindle drive motor 82. The spindle drive motor 82 is driven while its rotational speed is controlled by a drive output unit 81 that includes an inverter or the like. Earth axis 8
3 includes a rotation detector 84 for detecting its rotation speed.
is attached, and the output of the rotation detector 84 is input to the CPU 71 via a detection section 85.

The detection signal of the tension sensor 52 is transmitted to the CP via the amplifying section 86.
Input to U71.

The ring motor 9 that rotationally drives the rotary ring 1 is controlled and driven by a drive output unit 87 in response to a rotation speed command from the CPU 7t. Each rotating ring 1
Detection signals from the photoelectric sensor 27 provided in the sensor are input to the CPU 71 after passing through the detection section for 8 days. Detection signals from the rabbet rail position detector 61 and the ring rail position detector 62, which are composed of linear scales and the like attached to the rabbet rail 51 and the ring rail 36, are input to the CPU 71 via the detection section 9089, respectively.

Next, a method for determining the tension of the spun yarn 44 from the detection signal of the tension sensor 52 will be explained.

FIG. 7 is a diagram for explaining the relationship of forces applied to the spun yarn 44 by taking out the vicinity of the Snell wire 53 in FIG. 2. In FIG. 7, it is assumed that a straight line (upper tension) connecting the nip point PN and the contact point PS lies within the vertical plane P. When the balloon of the spun yarn 44 is in the vertical plane P, T3H=T2XCoscr --- (1) However,
α...Spinning angle T1...Balloon tensigon TIV...One rotation average vertical vector T2 of Tl...
・Upper spinning force T3...Resultant force of T2 and T i V 73H...T
The relational expression for the horizontal component of 3 holds true. Here, during one rotation of the traveler 41, the balloon tension T1 actually fluctuates minutely, but the one-rotation average vertical vector TIV of the balloon tension T1 and the upper spinning force T2 are understood as their average values. Because you can
TIV can be the average vertical vector of balloon tension TI.

Therefore, the upper spinning force T2 can be determined from the horizontal component T3H, which is the detection signal of the tension sensor 52, using the relational expression T2=T3-HxSecα=---- (2).

Next, an example of controlling the rotational speed of the rotating ring relative to the spindle using the spinning program stored in the ROM 73 or the external storage 77 will be explained with reference to FIG. In FIG. 6, the horizontal axis indicates the time from the start of winding an empty bobbin to the end of full winding, in terms of the proportion of yarns 43 formed on the bobbin 42;
The vertical axis indicates the rotational speed in revolutions per minute (RPM) for the spindle SP, and as the ratio of the revolutions per minute of the rotary ring 1 to the spindle SP in the case of the rotary ring 1.

The spinning program of the spindle rotation differs depending on the type and count of the spun yarn, other spinning conditions, and machine performance conditions, but it is possible to use the latest high-speed spinning machines equipped with inverters, etc. to produce short fibers of standard 40° medium-count cotton. In Fig. 6, which takes spinning of 3 to 60゛3 as an example, from the start of winding the empty bobbin to around the 3rd minute ball where the cup bottom is formed, the cop build is interlocked with slight movements including a cushion start. By increasing the spindle rotational speed NS in multiple steps within a tension range that does not cause yarn breakage, it is possible to increase the spindle rotational speed NS to the maximum possible spinning speed of 25,000 to 30,000 RPM for the machine and yarn type.

In the example shown in Fig. 6, at this time, the spindle rotation speed NS is changed from the start to the first speed (15,000 PPM) in 0 steps at once.
) within 20 seconds, and within 60 seconds 2nd gear (2
10,000 RPM) zone.

After that, the limits will vary depending on machine performance, etc., but in the latest ultra-high speed spinning machines, 3rd to 4th speeds and multi-speed program S
Due to C, in the H section where the cup bottom formation ends at the SC speed increase gradient from 25,000 to 30,000 RPM, which is the machine capacity limit, the ring rotation speed (RPM) N is also linked to the spindle rotation speed spinning program SC. Following ring rotation spinning program R
According to the speed increase gradient of C, the ring rotation speed N is controlled to increase while maintaining about 90% of the spindle rotation speed NS, and the rotation speed is increased from after the cup bottom reaches 3 to 4 minutes to before the full pipe.
．． The spindle rotation speed NS maintains the highest SC program in the middle 5 section where there is less occurrence of yarn breakage due to spinning stability from 5 to 9 minutes, but the ring rotation spinning program RC curve in this section is 60% of the SC curve. %, the ring rotation N corresponds to the speed change of the traveler between chases, and the ring is controlled to the automatic speed change rotation range between chases to reduce fluctuations in spinning tension and stabilize the spinning tension. Nearby, increase the IJ ring speed N again to 90% of the spindle speed NS.
From 9.5 minutes onwards, SC curve control is performed to reduce the spindle rotation speed NS to 1/2 to 2/3 of the maximum rotation speed to achieve a full pipe F.
B is reached, the machine base, spindle SP, ring rotating body 2
After reducing the inertia of the rotating body, switch off the machine at point SC (a), automatically start lowering the ring rail (inclined winding around the outer circumference of the full yarn cup), stop the ring rail at the lowest end, complete winding of the end thread, In contrast to the deceleration slope of the SCIHB curve up to spindle stop (S-0), the deceleration slope of the RC ring rotation control curve is such that the maximum spindle rotation is, for example, 30,000 RP.
If M, the SC (a) point is 1/2, 15,000 RPM,
RC (b) point at this time is half of SC (a) point
．． (7500 RPM) or less, the ring rotation is stopped (R-0) from the RC curve (b) point from the time HS from the SC curve (a) point to (S-0). ) is the same as the maximum HS or HS
The RC deceleration gradient is controlled to be approximately half of the SC deceleration gradient so that the R-OJ becomes shorter and the R-OJ occurs earlier than the rS-OJ.

In addition, in FIG. 6, curve SZ shows the spindle speed change curve of a conventional two-speed spinning spinning machine, and the difference between this curve SZ and the above-mentioned SC curve provides an advantage in increasing production. Next, the operation of the control device 70 configured as described above will be explained.

FIG. 4 is a block diagram showing the functions of the CPU 71 realized by programs stored in the ROM 73 or external storage 77.

First, when spinning is started, the reading unit 107 reads out the spinning program corresponding to the spun yarn from the ROM 73 or external storage 77, and the speed control unit 101 controls the rotation speed according to the spinning program. The command is output to the drive output section 81.87.

The detection units 85 and 88 detect the rotational speed of the spindle or the rotational ring, respectively.

The stretch detection unit 106 determines the stretch length based on the detection signals from the rabbet rail position detector 6l and the ring rail position detector 62. The tension detection unit 104 is
Based on the detection signals from a large number of tension sensors 52, detection signals in which the tension is less than a certain value are determined to be yarn breakage and excluded, and the average tension TC is determined from the remaining significant data.

Among the optimal tensions set from the keyboard 74 and stored in the optimal tension storage section 105, the optimal tension TS corresponding to the spun yarn is read out.

Comparison/judgment unit 03 compares the input average tension TC and the optimum tension TS, outputs the difference value TK, and determines that the average tension TC falls within the allowable range EK defined by the upper limit tension TSU and lower limit tension TSD. If not, it is determined whether the upper tension limit TSU or the lower limit tension TSD has been exceeded, and the judgment result is also output. The speed control section 101 performs speed correction control by the correction control section 102 based on the judgment result from the comparison judgment section 103 while outputting a rotation speed command according to the spinning program.

FIG. 5 is a flowchart showing the speed control processing by the speed control section 1 101 and the correction control section 102. first,. It is determined whether the ring rail position is not at the end position (step #1), and if it is at the end position, the control is ended. If it is not the end position, compare the average tension TC and the optimum tension TS (step #2), and if they are equal to each other,
Return to step #1 without changing the rotational speed of spindle SP and rotating ring 1. If the average tension TC is larger than the optimum tension TS, it is determined whether the average tension TC exceeds the upper limit tension TSU (step #3).

If YES in step #3, in order to reduce the rotation speed of the spindle SP, subtract the value obtained by multiplying the difference between the average tension TC and the upper limit tension TSU by the gain gs from the current spindle rotation speed NS. New spindle speed N
Set as S (step #5).

If step #3 is NO, that is, if the average tension TC does not exceed the upper limit tension TSU and is within the allowable range EK, then the rotation speed N of the rotating ring 1 exceeds the upper limit ratio ru to the spindle rotation speed NS. It is determined whether the value exceeds the multiplied value (step #4).

If YES in step #4, the process in step #5 is executed. If no, in order to increase the rotation speed of the rotating ring 1, add the value obtained by multiplying the difference between the average tension TC and the optimum tension TS by the gain gr to the current ring rotation speed N, Set as a new ring rotation speed N (step #6). In step #2, the average tension TC becomes the optimum tension TS
If the average tension TC is smaller than the lower limit tension TSD
Determine whether the value is below (Step 7 #7).

If YES in step #7, in order to increase the rotation speed of the spindle SP, add the value obtained by multiplying the difference between the lower limit tension TSD and the average tension TC by the gain gs to the current spindle rotation speed NS. Set as a new spindle rotation speed NS (step #9). If step #7 is NO, that is, if the average tension TC is not lower than the lower limit tension TSD and is within the allowable range EK, then the rotation speed N of the rotating ring 1 exceeds the lower limit ratio rd to the spindle rotation speed NS. Determine whether the value is less than the multiplied value (step #8). If YES in step #8, execute the process in step #9. If no, in order to decrease the rotational speed of the rotating ring 1, a new value is obtained by subtracting the value of the difference between the optimum tension TS and the average tension TC by the gain gr from the current ring rotational speed N. Set the ring rotation speed N (step #10). In the above process, to give an example of numerical values, for example, for the medium-count spun yarn 44, the optimum tension TS is 25 grams, the tolerance range EK is plus or minus 10 grams, that is, the upper limit tension TSU is 35 grams, and the lower limit tension TSD is It is 15 grams. Through the above-described processing, the average tension TC of the spun yarn is controlled so as to approach the preset optimum tension TS. Also,
If the average tension TC does not fall within the allowable range EK of the optimum tension TS even if the ring rotation speed N is increased with respect to the spindle rotation speed NS set in the spinning program, the spindle rotation speed NS will be changed. and the average tension TC is within the allowable range E
Il to enter K! be controlled.

Thereby, the average tension TC is controlled to be within the allowable range EK and to be the optimum tension TS throughout the entire spinning process. According to the above-mentioned embodiment, since it is only necessary to provide electrical wiring to the rotating ring 1, there is no need for piping for using compressed air as in the past, and the structure of the ring rail (machine base) is complicated. It will never change.

According to the above embodiment, spinning can be performed at high speed and in a short time without causing breakage of the spun yarn 44 at the beginning of winding the spun yarn 44 on the bobbin 42 and near the full tube. In addition, it is possible to perform stable spinning at high speed even in the middle, improving productivity. According to the embodiment described above, the rotor 10 is provided approximately at the center of the outer peripheral surface of the ring rotating body 2 in the axial direction, and the armature l
1 is provided at approximately the center in the axial direction of the inner peripheral surface of the holder 8 and at a position facing the outer peripheral side of the rotor 10, so that the outer diameter of the rotating ring 1 can be kept to a minimum.
The rotating ring 1 can be small and rotate stably. Therefore, the distance between the spindles to which the rotating ring 1 is attached is prevented from increasing, and the rotating ring 1 can be installed in the same space.
The number of installed units will not decrease. In the embodiment described above, when the average tension TC exceeds a preset range, the ring rotation speed N may be increased or decreased to control the average tension TC to be within the allowable range EK.

In the embodiment described above, the rotational speed command from the control device 70 may be outputted as a plurality of identical outputs, and the outputs may be branched by a buffer in order to avoid fan-out limitations.

In the embodiments described above, if the rotation of the spindle SP and the rotating ring 1 by the spinning program is programmed to give an optimum tension to the spun yarn, or if the fluctuations in the tension of the spun yarn are controlled by other means. In this case, the rotation speed of the spindle SP and the rotating ring 1 can be controlled only by the spinning program without correcting the rotation speed of the ring motor based on the tension of the spun yarn.

In the above embodiment, the spinning program is stored in the ROM 73.
Or, it is stored in the external memory 77, but the storage format may be a pure program that outputs the number of rotations according to the proportion of divided balls, or it may be stored as a pure program that outputs the number of rotations according to the proportion of divided balls or a change in the number of rotations according to the proportion of divided balls. It may also be a table that stores data.

Further, the format and storage location of the spinning program may be different between the spindle SP and the rotating ring 1. for example,
Regarding the rotating ring 1, data on the rotation ratio with respect to the spindle SP may be stored in a table.

In the above-described embodiment, if the spindle rotation speed NS is not overridden by the tension of the spun yarn 44, it is not necessary to set the spinning program according to the stretch length or the splitting ratio. It can be set according to the passage of time. In this case, the parameter of the spinning program is the elapsed time. Note that the rotational speed control by the spinning program is not limited to the rotating ring l having the above-mentioned structure, and may be, for example, a ring with a built-in DC motor. In the above-described embodiment, by using a vertically divided cylindrical piece of a thin permanent magnet magnetized with radially oriented multipolar poles and having a strong magnetic field made of cobalt-based, neodymium-iron-based, or other rare earth elements as the rotor 10, The ring motor 9 can be configured with sufficient torque, and the rotating ring 1 can be made small. In addition, in order to prevent magnetic field leakage from the rotor 10 to the flange rotor 3 and traveler 41, the material of the baser 28, the flange rotor 3, or the lower rotor 5 should be made appropriate, or magnetic shielding materials should be installed in appropriate places. Bye.

In the embodiment described above, the pipe yarn 43 between the chases during spinning
The winding diameter is detected by installing a light emitter and a light receiver such as a laser diode at a position corresponding to the top of the ring flange 4, and a control system including a winding diameter detection circuit, a coefficient calculator, an override ring drive circuit, etc. In addition, it is also possible to perform correction control of the ring rotation speed in response to fluctuations in spinning tension between chases.

In the embodiments described above, other bearing mechanisms may be used in place of the bearings 6, 7. In place of the keyboard 74, other suitable switches, dials, etc. may be used. In the embodiments described above, various methods, structures, dimensions, shapes, materials, etc. of the rotating ring 1, ring motor 9, photoelectric sensor 27, and other members other than those described above can be adopted. Furthermore, the circuitry and configuration of the control device 70 can be modified in various ways, and the functions realized by the CPU 71 can be realized by appropriate hardware circuits, or vice versa.

〔Effect of the invention〕

According to the invention of claim 1, it is possible to provide a rotating spinning ring with a built-in ring motor that can be constructed in a small size. According to the invention of Claims 2 to 5, it is possible to perform spinning at high speed and without causing yarn breakage by using a rotating spinning ring with a built-in ring motor. therefore,
This makes it possible to significantly improve the productivity of spinning machines.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional front view of a rotating ring according to the present invention, FIG. 2 is a diagram showing changes in spinning tension and stretch length during use of the rotating ring in FIG. 1, and FIG. A block diagram of the control device, FIG. 4 is a block diagram showing the functions of the CPU realized by a program stored in ROM or external storage, and FIG. 5 is a flowchart showing speed control processing by the speed control section and correction control section. , FIG. 6 is a diagram showing an example of rotational speed control by a spinning program stored in ROM or external storage, and FIG. 7 is a diagram showing the relationship between the forces applied to the spun yarn by taking out the vicinity of the Snell wire in FIG. 2. This is a diagram for 1... Rotating ring (rotating ring for spinning), 2... Ring rotating body, 6.7... Bearing (bearing mechanism), 8... Holder, 9... Ring motor, IO... Rotor, 11...armature,
44...Spun yarn, 70...Control device, 71...C
PU (controlling means), 73...ROM (programming means), 74...keyboard (setting means), 77...
External storage (program means), 101... Speed control section (control means, program control means), 102... Correction control section (correction control means), 103... Comparison judgment section (comparison means, judgment means) , lO4...Tension detection unit (tension detection means). Diagram

Claims (5)

[Claims] (1) A rotating ring for spinning comprising a holder and a ring rotating body rotatably supported by the holder via a bearing mechanism, wherein the rotor made of a permanent magnet is attached to the outer periphery of the ring rotating body. The armature, which together with the rotor constitutes a ring motor, is located approximately in the axial center of the inner circumferential surface of the holder and facing the outer circumferential side of the rotor. A rotating ring for spinning, characterized in that it is provided at a certain position. (2) A control device for a rotating ring for spinning with a built-in ring motor, comprising a tension detection means for detecting the tension of the spun yarn, a setting means for setting the optimum tension of the spun yarn, and the tension detection means. a comparing means for comparing the detected tension with the optimum tension set by the setting means; and controlling the rotation speed of the ring motor so that the tension of the spun yarn approaches the optimum tension according to the output of the comparing means. 1. A control device for a rotating ring for spinning, comprising a control means for controlling a spinning ring. (3) A control device for a rotating ring for spinning with a built-in ring motor, comprising: a tension detection means for detecting the tension of the spun yarn; a setting means for setting the optimum tension of the spun yarn; and the tension detection means. determining means for determining whether or not the detected tension is within an allowable range for the optimum tension set by the setting means; and determining the rotation speed of the ring motor so that the tension of the spun yarn falls within the allowable range. 1. A control device for a rotating ring for spinning, comprising a control means for controlling the spinning ring. (4) A control device for a rotating ring for spinning having a built-in ring motor, comprising: a tension detection means for detecting the tension of the spun yarn; a setting means for setting the optimum tension of the spun yarn; and the tension detection means. determining means for determining whether the detected tension is within an allowable range for the optimum tension set by the setting means; and determining the rotation speed of the spindle and the spinning rotating ring according to the stretching length or the splitting ratio. program control means for controlling the ring motor so that the rotation speed of the spinning ring is set to a predetermined rotation speed; It is characterized by comprising a correction control means for correcting the rotational speed of the ring motor so that the tension falls within the permissible range when it is determined by the means that the tension of the spun yarn exceeds the permissible range. Control device for spinning spinning ring. (5) A control device for a rotating spinning ring with a built-in ring motor, which controls the rotational speed of a spindle and the rotational speed of a spinning spinning ring corresponding to the rotational speed of the spindle in accordance with a stretch length or a splitting ratio. A spinning rotation characterized in that it has a program means for setting a spinning ring, and a program control means for controlling the ring motor so that the rotation speed of the spinning rotation ring becomes the rotation speed set in the program means. Ring control device.